I added some totally new names to my list, so I was looking for some thoughts Thank you!
Eira Josephine (prn. EYE-ra)
Helena Violet (I use the HELL-en-uh pronunciation)
Marian Ivy
Celia Linden (Linden is honoring)
Adrian Lark (I like this combo but just realized it's probably too unisex... wdyt? Adrian Felix is also an option)
Cole Theodore
Elliot Arthur
Percy LeanderReid Alexander
Eira Josephine: When I first saw this, I saw it as ear-uh. Now that I know your pronunciation, I do see it correctly but there definitely would be a lot of issues down the road with it. I looked it up and it can also be pronounced ay-ra. So you'd get all sorts of things I think. That's enough to make me, personally, stay away from a name. However, it works so beautifully with Josephine! (7/10)
Helena Violet: I pronounce this the same way, because to me it's the only way that makes sense, but I can't say for sure if you'd struggle with people pronouncing this incorrectly too. I think it pairs really well with Violet. (8/10)
Marian Ivy: I don't really care for either of these names very much but Ivy makes a great middle and the two work well together. (7/10)
Celia Linden: Linden being an honor name does make it even better but I don't think Linden is bad even if it wasn't an honor name. Celia is a solid name. I'm sure some wouldn't like the -lia Lin- pairing but I don't mind it. (9/10)
Adrian Lark: I don't know much about the name Lark but the pairing of the two doesn't scream unisex to me. To me, Adrian is masculine and Adrienne is feminine and they have a slight pronunciation difference. Adrian on a girl is just a boy name on a girl imo. I think Adrian Lark is just fine and totally usable. However, I do love Felix. I do think Adrian Lark flows better but Adrian Felix does work too. (AL: 9/10, AF: 8/10)
Cole Theodore: I do like both of these names, a lot. But I don't think they go together really well, at least not in this order. Theodore Cole would work but I just don't think Cole Theodore flows as well. I guess the last name could make or break the combo. (9/10)
Elliot Arthur: I think Elliot is a great choice and Arthur flows with it so nicely! Great pairing! (10/10)
Percy Leander: I think Percy is a great choice, though I almost think it's better as a nickname. I do like the Percy Lee- sound but I don't think Leander really works with Percy. It's an alright combo, I'd consider another Lee- name though. (8/10)
Reid Alexander: Reid is an alright name, I don't really have an opinion on it one way or another. I think it would work well with the other names on your list (as siblings). Alexander is a great middle with it, flows well and makes a strong sounding combo. (10/10)